SBC86840 Series All-In-One Mini ITX Board User’s Manual
Jumpers and Connectors
35
2.4.21 Mini PCI-Express Socket: CNS1 (Optional)
CNS1
is a Mini PCI Express Card Socket to support both a PCI
Express x1 link and a USB 2.0 link. A PCI Express Mini Card can be
applied to either PCI Express or USB 2.0 (or both). The USB 2.0
support will be helpful during the transition to PCI Express, because
peripheral vendors will need time to design their chipsets to have the
PCI Express function. During the transition period, PCI Express Mini
Cards can be quickly implemented by using USB 2.0.
This connector is optional. It is not mounted as a default design.
Pin
Description
Pin
Description
1 PCIE_WAKE#
2
+3.3V
3 N.C
4
GND
5 N.C
6
+1.5
V
7 GND
8
N.C
9 GND
10
N.C
11 PCIE_CLK-
12
N.C
13 P
14
N.C
15 GND
16
N.C
17 N.C
18
GND
19 N.C
20
N.C
21 GND
22
PCIE_RESET#
23 PCIE_RXN
24
+3.3V_SBY
25 PCIE_RXP
26
GND
27 GND
28
+1.5V
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